Vulnerability Description
Vim is an open source, command line text editor. Prior to 9.2.0699, Vim's Python omni-completion (runtime/autoload/python3complete.vim and the legacy pythoncomplete.vim) executes reconstructed function and class definitions from the current buffer with exec() as part of populating the completion dictionary. When reconstructing that source, each scope's docstring is inserted verbatim between triple quotes with no escaping, so a hostile buffer can break out of the triple-quoted literal and execute attacker-controlled Python during omni-completion. This vulnerability is fixed in 9.2.0699.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vim | Vim | < 9.2.0699 |
Related Weaknesses (CWE)
References
- https://github.com/vim/vim/commit/cce141c42740f122dd8486ae04e21c2a81016ba8Patch
- https://github.com/vim/vim/releases/tag/v9.2.0699Product
- https://github.com/vim/vim/security/advisories/GHSA-ppj8-wqjf-6fp3Vendor Advisory
FAQ
What is CVE-2026-57456?
CVE-2026-57456 is a vulnerability with a CVSS score of 7.8 (HIGH). Vim is an open source, command line text editor. Prior to 9.2.0699, Vim's Python omni-completion (runtime/autoload/python3complete.vim and the legacy pythoncomplete.vim) executes reconstructed functio...
How severe is CVE-2026-57456?
CVE-2026-57456 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-57456?
Check the references section above for vendor advisories and patch information. Affected products include: Vim Vim.